llvm.org GIT mirror llvm / c1e784c include / llvm / Transforms / Utils / SplitModule.h

Tree @c1e784c (Download .tar.gz)

SplitModule.h @c1e784craw · history · blame

//===- SplitModule.h - Split a module into partitions -----------*- C++ -*-===//
//                     The LLVM Compiler Infrastructure
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
// This file defines the function llvm::SplitModule, which splits a module
// into multiple linkable partitions. It can be used to implement parallel code
// generation for link-time optimization.


#include <functional>
#include <memory>

namespace llvm {

class Module;
class StringRef;

/// Splits the module M into N linkable partitions. The function ModuleCallback
/// is called N times passing each individual partition as the MPart argument.
/// FIXME: This function does not deal with the somewhat subtle symbol
/// visibility issues around module splitting, including (but not limited to):
/// - Internal symbols should not collide with symbols defined outside the
///   module.
/// - Internal symbols defined in module-level inline asm should be visible to
///   each partition.
void SplitModule(
    std::unique_ptr<Module> M, unsigned N,
    std::function<void(std::unique_ptr<Module> MPart)> ModuleCallback);

} // End llvm namespace